JPH08196534A - Medical bed device - Google Patents

Abstract

PURPOSE: To easily insert/extract a cassette and to easily photograph an X-ray radiographic image. CONSTITUTION: A freely ascendable/descendable pedestal 1 is installed on a floor, and a top board supporting frame 2 is arranged on the upper part of the pedestal 1. The cassette insertion/extraction port 2b of the top board supporting frame 2 to place/exchange (insert/extract) a cassette C is arranged at a position on an opposite side. The cassette C is enabled to move in the longitudinal direction of a top board 3 by a cassette moving mechanism consisting of a driven pulley 20, a main driving pulley 21, a belt 23 hung over them and a motor 30 which drives the main driving pulley 21.

Description

Detailed Description of the Invention

[0001]

This invention relates to an X-ray CT (Computer
Tomography) equipment, magnetic resonance tomography (MRI) equipment, nuclear medicine equipment (gamma camera equipment, positron equipment, SPECT equipment) and other medical bed equipment used for CT equipment, especially the opening of the gantry of the CT equipment. The top plate is inserted into the top to perform imaging, and the X-ray tube placed above the top plate and the cassette placed below the top plate in the top plate support frame indicate the region of interest of the subject. The present invention relates to a medical bed device for capturing an X-ray fluoroscopic image.

[0002]

2. Description of the Related Art As a conventional device of this type, for example, there is a medical bed device as shown in FIG. This medical bed apparatus includes a base 1 that is installed on a floor and can be raised and lowered, and a base 1
A top plate supporting frame 2 disposed on the upper part of the table, and a top plate 3 for placing a subject on the top plate supporting frame 2 so as to be horizontally movable. This medical couch device is installed, for example, close to a gantry 6 of an X-ray CT apparatus having an X-ray irradiation unit and an X-ray detection unit on the inner peripheral surface of the opening 5.

An X-ray tube 10 for photographing an X-ray fluoroscopic image is provided above the top plate 3 so as to be close to the ceiling surface by a ceiling suspension system, or to the ceiling surface via an arm extending from the floor surface. They are arranged close to each other. The X-ray tube 10 can be moved up and down, front and back (front and back sides of the paper) and left and right (the head of the subject M.
It can be moved to the feet). In order to directly capture an X-ray fluoroscopic image with the X-ray tube 10, it is necessary to place a cassette C containing an X-ray film below the top plate 3.

In the medical bed apparatus according to the conventional example having such a configuration, for example, the subject M is placed so that the region of interest (for example, the head) of the subject M is directly below the X-ray tube 10. Move the top plate 3. Then, X-rays are emitted from the X-ray tube 10 to print an X-ray fluoroscopic image on the X-ray film in the cassette C. After that, the base 1 is raised so that the top plate 3 can enter the opening 5 of the gantry 6, and a tomographic image is taken by the X-ray CT apparatus.

[0005]

By the way, in order to take a tomographic image by the gantry 6 of the X-ray CT apparatus, it is necessary to let the subject M enter the opening 5, and at that time, the top plate 3 is Since it is supported by the top support frame 2 in a cantilever manner, the medical couch device is attached to the gantry 6 so that the length of the cantilever portion can be shortened as much as possible (in consideration of the strength of the top board 3). They are installed close to each other. Therefore, in order to place the cassette C below the top plate 3, the cassette C is placed on the top plate support frame 2 through the opening 5 of the gantry 6, so that the cassette C placement work or replacement work is performed. There is a problem that is very complicated.

Therefore, the base 1 of the medical bed apparatus is raised and the cassette C is placed through the opening 5 in this state so that the cassette C can be easily placed. However, the distance between the focal point of the X-ray tube 10 and the X-ray film [built in the cassette C] requires a certain distance L, but the base 1 of the medical bed apparatus is raised. Then, the distance between the focal point of the X-ray tube 10 and the cassette C is shorter than the distance L, and imaging cannot be performed. Therefore, when performing imaging, it is necessary to lower the base 1 of the medical bed apparatus so that the interval becomes the interval L again, which causes a problem that the imaging of the X-ray fluoroscopic image becomes complicated. . Alternatively, in order to obtain the distance L, there is a problem that the ceiling surface of the room in which the apparatus is installed must be designed high so that the X-ray tube 10 can be moved upward.

The present invention has been made in view of the above circumstances, and provides a medical bed apparatus in which a cassette can be easily inserted and removed and an X-ray fluoroscopic image can be easily captured. The purpose is to provide.

[0008]

The present invention has the following configuration to achieve the above object. That is, the X-ray CT apparatus according to the present invention is capable of moving up and down on a floor, a top support frame disposed on the top of the base, and horizontally movable on the top support frame. And a top plate for placing a subject supported on the top plate, the top plate is inserted into the opening of the gantry of the CT apparatus to perform imaging, and an X-ray tube arranged above the top plate, In a medical bed apparatus for capturing an X-ray fluoroscopic image of a region of interest of a subject with a cassette placed in the top plate support frame below the top plate, a gantry side of the top plate support frame. In the opposite position to
A cassette insertion / extraction opening for inserting / removing the cassette is provided, and a cassette moving mechanism is provided for supporting the cassette placed in the top plate support frame so as to be movable in the longitudinal direction of the top plate. To do.

[0009]

The operation of the present invention is as follows. That is, since the cassette insertion / extraction opening for inserting / removing the cassette is arranged at a position opposite to the gantry side of the top plate supporting frame, it is not necessary to place the cassette through the opening of the gantry, and the cassette can be moved up and down. The cassette can be easily placed / replaced (inserted / removed) through the cassette insertion / extraction opening regardless of the height of the top plate support frame supported by the base.
In addition, since the cassette placed is supported by the cassette moving mechanism so as to be movable in the longitudinal direction of the top plate, the cassette can be moved to the region of interest of the subject without moving the top plate on which the subject is placed. Can be made.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a schematic configuration of a top plate support frame of a medical bed apparatus according to an embodiment, and FIG. 2 is a sectional view taken along the line AA of FIG. A gantry 6 [shown in FIG. 4] is arranged on the left side in FIG.

In the figure, reference numeral 1 is a base which is installed on the floor and can be raised and lowered. A top plate support frame 2 is arranged above the base 1. The top plate support frame 2 supports a top plate 3 for placing a subject on the upper part thereof so as to be horizontally movable. The top plate 3 is
Small wheels 3a are attached to both side surfaces located on the side away from the gantry. These small wheels 3a are loosely inserted into concave grooves provided on both side walls of the upper surface concave portion of the top plate supporting frame 2,
It is supported so as to be horizontally movable in the longitudinal direction along the groove.

An opening 2a is provided on the gantry side of the top plate support frame 2 so as not to interfere with the top plate 3 when the top plate 3 is horizontally moved and fed out.
A cassette insertion / removal opening 2b for inserting / removing a cassette C containing one or a plurality of line films is provided.
The inner space of the top plate support frame 2 is vertically divided by a partition member 2c. In the lower space of the partitioned internal space, the driven pulley 20 is provided at both ends in the longitudinal direction.
There are 4 in total, 2 for each. A driven pulley 21 attached to the rotating shaft of the motor 30 is disposed on the driven pulley 20 side of the driven pulley 20 which is disposed on the side away from the gantry. These driven pulleys 20
A wide belt 23 is stretched over the driving pulley 21 so as to slide on the upper surface of the partition member 2c. On the upper surface of the belt 23 sliding on the partition member 2c, a large protrusion 23a for restricting an unexpected movement of the cassette C is formed.
And a small protrusion 23b is provided. The driven pulley 20, the driving pulley 21, the belt 23, and the motor 3
0 corresponds to the cassette moving mechanism in this invention.

The top plate 3 is provided on the front side surface of the top plate support frame 2.
An elongated hole 2d is formed in the longitudinal direction of, and a transparent plate member 2e is adhered from the inside along the elongated hole 2d. The position of the display 24 indicating the center of photographing can be confirmed from the elongated hole 2d. The indicator 24 is fixed to the lower belt 23 passing through the driving pulley 21 via a rod-shaped support member. The display 24 may be attached to an L-shaped support member so that the position can be confirmed on the upper surface of the top plate support frame 2. Further, a light emitting device such as a light emitting diode may be attached to the display device 24 and a translucent plate member may be used instead of the transparent plate member. According to this, the internal structure of the top plate support frame 2 is not exposed.

Next, the operation of the above-mentioned medical bed apparatus will be described with reference to FIG. First, cassette insertion / extraction port 2
The cassette C is placed on the upper surface of the belt 23 via b.
Then, by pressing a movement switch (not shown), the motor 30 is rotationally driven to move the belt 23.
Due to the movement of the belt 23, the cassette C placed thereon moves in the same direction as the movement direction of the belt 23. Even if the motor 30 is suddenly rotated,
Since the unexpected movement of the cassette C is restricted by the large protrusion 23a and the small protrusion 23b on the belt 23,
The center positions of the display 24 and the cassette C are not displaced. Then, when the position indicated by the display 24 and the imaging center of the X-ray tube 10 arranged above coincide with each other, the movement switch (not shown) is opened. Here, the region of interest will be described as the head of the subject M. As shown in the figure, the cassette C placed near the foot of the subject M is moved by the belt 23 as the motor 30 rotates and the subject M is moved. Move near the head. In this state, X-rays are radiated from the X-ray tube 10 and the subject M
An X-ray fluoroscopic image of the human head.

When the X-ray fluoroscopic image has been taken, a movement switch (not shown) is depressed to move the motor 30 this time.
Is rotated in the opposite direction to return the belt 23 to the original state. As a result, the cassette C retracts from the region of interest (near the head) of the subject M to the vicinity of the foot. Then, the inspector takes out the cassette C containing the photographed X-ray film from the cassette insertion port 2b. If necessary, a new cassette C is inserted through the cassette insertion / extraction opening 2b.

Next, the base 1 is raised so that the region of interest of the subject M is located near the imaging center of the gantry 6. Then, the top plate 3 is extended together with the subject M and the gantry 6
To the opening 5. Then, the gantry 6 is used to capture a tomographic image of the region of interest.

In this way, the gantry 6 of the top plate supporting frame 2 is
Since the cassette insertion / removal opening 2b for inserting / removing the cassette C is provided at the position opposite to the position, the gantry 6 can be installed regardless of the height of the tabletop support frame 2 of the medical bed apparatus. Further, the cassette C can be placed / replaced (inserted / removed) without the work being hindered by the extended top plate 3. Therefore, even when the base 1 is at the lowest position where the height is the lowest, the cassette C can be easily placed and replaced, and the X-ray fluoroscopic image can be easily captured. As a result, the space L between the X-ray tube 10 and the cassette C can be maintained at a required distance L, so that the base 1 is raised to mount / replace the cassette C as in the conventional apparatus, and the [required distance is required]. To obtain L], it is not necessary to raise the height of the X-ray tube 10 accordingly. Therefore, the ceiling height of the installation location of the device can be kept low.

Further, since the cassette C placed can be moved in the longitudinal direction of the top plate 3 by the cassette moving mechanism, only the cassette C of the subject M is moved without moving the subject M together with the top plate 3. It can be moved to the site of interest. Therefore, when the X-ray fluoroscopic image is taken, the X-ray fluoroscopic image of the region of interest can be easily taken without moving the top plate 3 on which the subject M is placed in the longitudinal direction.

In this embodiment, the driven pulley 20
Although the cassette moving mechanism is composed of the driving pulley 21, the belt 23, and the motor 30, various modifications are possible without being limited to this. For example, the cassette moving mechanism may be configured by a mounting table on which the cassette C is mounted, a screw shaft screwed onto the mounting table, and a motor that rotationally drives the screw shaft.

Further, in this embodiment, the cassette insertion / extraction opening 2 is provided on the side surface of the top plate supporting frame 2 opposite to the gantry.
Although b is formed by an opening, a cassette insertion / extraction door that can be opened and closed may be provided so that the cassette insertion / extraction opening appears when it is opened.

[0021]

As is apparent from the above description, according to the present invention, the cassette insertion / removal opening for inserting / removing the cassette is disposed at the position opposite to the gantry side of the top plate support frame. Therefore, it is not necessary to place the cassette through the opening of the gantry, and no matter what height the top plate support frame supported by the base that can be raised and lowered is, The cassette can be easily inserted and removed.

Further, since the cassette placed can be moved in the longitudinal direction of the table by the cassette moving mechanism, the cassette can be moved to the region of interest of the object without moving the object together with the table. . Therefore, an X-ray fluoroscopic image can be easily captured.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a medical bed apparatus according to an embodiment.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a diagram for explaining the operation of the apparatus according to the embodiment.

FIG. 4 is a diagram for explaining a medical bed apparatus according to a conventional example.

[Explanation of symbols]

 1 ... Base 2 ... Top plate support frame 2a ... Opening 2b ... Cassette insertion / extraction opening 2c ... Partition member 2d ... Oval hole 2e ... Plate member 3 ... Top plate 5 ... Opening part 6 ... Gantry 10 ... X-ray tube 20 ... Followed pulley 21 ... Driving pulley 23 ... Belt 23a ... Large protrusion 23b ... Small protrusion 24 ... Indicator 30 ... Motor C ... Cassette

Claims (1)

[Claims] 1. A vertically movable base mounted on a floor surface, a top support frame disposed on the top of the base, and a subject mount supported horizontally on the top support frame. A top plate for placing the top plate, the top plate is inserted into the opening of the gantry of the CT apparatus to perform imaging, and the X-ray tube disposed above the top plate and the lower part of the top plate. In a medical bed apparatus for capturing an X-ray fluoroscopic image of a region of interest of a subject by a cassette placed in the top plate support frame, at a position opposite to the gantry side of the top plate support frame, The cassette insertion / extraction opening for inserting / removing the cassette is provided, and a cassette moving mechanism is provided for supporting the cassette placed in the top plate support frame so as to be movable in the longitudinal direction of the top plate. Medical sleeper device.